Collada exporter update

Added new feature: Collada: global axis rotation upon export (UI)

The new feature allows to specify the target rest coordinate system upon export.
This allows for example to export a character that is in Blender orientation (Y forward)
to match the Secondlife orientation where (-X forward)

- Refactor:Added new utility methods to collada_utils
           Made BCMatrix class more powerfull
           moved Blender related structures into new BlenderContext class
           added class wrapper to encapsulate ExportSettings structure
           Added blender context getters to ExportSettings
           added access methods to BlenderContext into ExportSettings class
           Moved class BCMatrix into BlenderContext
           moved utility functions from collada_util into BlenderContext
           replace own function for parenting by a call to ED_object_parent_set()

- Cleanup: removed obsolete parameters from methods
           renamed parameters for better understanding
           cleanup whitespace and indentation
           removed obsolete comments

1 files changed, 70 insertions, 1 deletions

diff --git a/source/blender/editors/io/io_collada.c b/source/blender/editors/io/io_collada.c
index 9796bf89cf3..aa0c2b58468 100644
--- a/source/blender/editors/io/io_collada.c
+++ b/source/blender/editors/io/io_collada.c
@@ -81,6 +81,9 @@ static int wm_collada_export_exec(bContext *C, wmOperator *op)
 {
   char filepath[FILE_MAX];
   int apply_modifiers;
+  int global_forward;
+  int global_up;
+  int apply_global_orientation;
   int export_mesh_type;
   int selected;
   int include_children;
@@ -140,6 +143,10 @@ static int wm_collada_export_exec(bContext *C, wmOperator *op)
   /* Options panel */
   apply_modifiers = RNA_boolean_get(op->ptr, "apply_modifiers");
   export_mesh_type = RNA_enum_get(op->ptr, "export_mesh_type_selection");
+  global_forward = RNA_enum_get(op->ptr, "export_global_forward_selection");
+  global_up = RNA_enum_get(op->ptr, "export_global_up_selection");
+  apply_global_orientation = RNA_boolean_get(op->ptr, "apply_global_orientation");
+
   selected = RNA_boolean_get(op->ptr, "selected");
   include_children = RNA_boolean_get(op->ptr, "include_children");
   include_armatures = RNA_boolean_get(op->ptr, "include_armatures");
@@ -181,6 +188,11 @@ static int wm_collada_export_exec(bContext *C, wmOperator *op)
   export_settings.filepath = filepath;
 
   export_settings.apply_modifiers = apply_modifiers != 0;
+  export_settings.global_forward = global_forward;
+  export_settings.global_up = global_up;
+  export_settings.apply_global_orientation = apply_global_orientation != 0;
+
+  export_settings.export_mesh_type = export_mesh_type;
   export_settings.export_mesh_type = export_mesh_type;
   export_settings.selected = selected != 0;
   export_settings.include_children = include_children != 0;
@@ -250,7 +262,7 @@ static int wm_collada_export_exec(bContext *C, wmOperator *op)
 
 static void uiCollada_exportSettings(uiLayout *layout, PointerRNA *imfptr)
 {
-  uiLayout *box, *row, *col, *split;
+  uiLayout *bbox, *box, *row, *col, *split;
   bool include_animations = RNA_boolean_get(imfptr, "include_animations");
   int ui_section = RNA_enum_get(imfptr, "prop_bc_export_ui_section");
 
@@ -272,6 +284,18 @@ static void uiCollada_exportSettings(uiLayout *layout, PointerRNA *imfptr)
     /* Export Data options */
     /* =================== */
 
+    bbox = uiLayoutBox(layout);
+    row = uiLayoutRow(bbox, false);
+    uiItemL(row, IFACE_("Global Orientation:"), ICON_ORIENTATION_GLOBAL);
+    row = uiLayoutRow(bbox, false);
+    uiItemR(row, imfptr, "export_global_forward_selection", 0, "", ICON_NONE);
+
+    row = uiLayoutRow(bbox, false);
+    uiItemR(row, imfptr, "export_global_up_selection", 0, "", ICON_NONE);
+
+    row = uiLayoutRow(bbox, false);
+    uiItemR(row, imfptr, "apply_global_orientation", 0, NULL, ICON_NONE);
+
     row = uiLayoutRow(box, false);
     uiItemR(row, imfptr, "selected", 0, NULL, ICON_NONE);
 
@@ -287,6 +311,8 @@ static void uiCollada_exportSettings(uiLayout *layout, PointerRNA *imfptr)
     uiItemR(row, imfptr, "include_shapekeys", 0, NULL, ICON_NONE);
     uiLayoutSetEnabled(row, RNA_boolean_get(imfptr, "selected"));
 
+    row = uiLayoutRow(box, false);
+
     /* Texture options */
     box = uiLayoutBox(layout);
     row = uiLayoutRow(box, false);
@@ -418,6 +444,26 @@ void WM_OT_collada_export(wmOperatorType *ot)
       {0, NULL, 0, NULL, NULL},
   };
 
+  static const EnumPropertyItem prop_bc_export_global_forward[] = {
+      {BC_GLOBAL_FORWARD_X, "X", 0, "X Forward", "Global Forward is positive X Axis"},
+      {BC_GLOBAL_FORWARD_Y, "Y", 0, "Y Forward", "Global Forward is positive Y Axis"},
+      {BC_GLOBAL_FORWARD_Z, "Z", 0, "Z Forward", "Global Forward is positive Z Axis"},
+      {BC_GLOBAL_FORWARD_MINUS_X, "-X", 0, "-X Forward", "Global Forward is negative X Axis"},
+      {BC_GLOBAL_FORWARD_MINUS_Y, "-Y", 0, "-Y Forward", "Global Forward is negative Y Axis"},
+      {BC_GLOBAL_FORWARD_MINUS_Z, "-Z", 0, "-Z Forward", "Global Forward is negative Z Axis"},
+      {0, NULL, 0, NULL, NULL},
+  };
+
+  static const EnumPropertyItem prop_bc_export_global_up[] = {
+      {BC_GLOBAL_UP_X, "X", 0, "X Up", "Global UP is positive X Axis"},
+      {BC_GLOBAL_UP_Y, "Y", 0, "Y Up", "Global UP is positive Y Axis"},
+      {BC_GLOBAL_UP_Z, "Z", 0, "Z Up", "Global UP is positive Z Axis"},
+      {BC_GLOBAL_UP_MINUS_X, "-X", 0, "-X Up", "Global UP is negative X Axis"},
+      {BC_GLOBAL_UP_MINUS_Y, "-Y", 0, "-Y Up", "Global UP is negative Y Axis"},
+      {BC_GLOBAL_UP_MINUS_Z, "-Z", 0, "-Z Up", "Global UP is negative Z Axis"},
+      {0, NULL, 0, NULL, NULL},
+  };
+
   static const EnumPropertyItem prop_bc_export_transformation_type[] = {
       {BC_TRANSFORMATION_TYPE_MATRIX,
        "matrix",
@@ -503,6 +549,29 @@ void WM_OT_collada_export(wmOperatorType *ot)
                "Resolution",
                "Modifier resolution for export");
 
+  RNA_def_enum(func,
+               "export_global_forward_selection",
+               prop_bc_export_global_forward,
+               BC_DEFAULT_FORWARD,
+               "Global Forward Axis",
+               "Global Forward axis for export");
+
+  RNA_def_enum(func,
+               "export_global_up_selection",
+               prop_bc_export_global_up,
+               BC_DEFAULT_UP,
+               "Global Up Axis",
+               "Global Up axis for export");
+
+  RNA_def_boolean(func, "", false, "Selection Only", "Export only selected elements");
+
+  RNA_def_boolean(func,
+                  "apply_global_orientation",
+                  false,
+                  "Apply Global Orientation",
+                  "enabled: Rotate all root objects to match the global orientation "
+                  "settings.\ndisabled: set global orientation in Collada assets");
+
   RNA_def_boolean(func, "selected", false, "Selection Only", "Export only selected elements");
 
   RNA_def_boolean(func,